'''
在服务器用这些指令
sudo apt-get update
sudo apt-get install nginx libnginx-mod-rtmp vlc ffmpeg

/etc/nginx/nginx.conf
add:
rtmp {
    server {
        listen 1935;
        chunk_size 307200;

        application live {
            live on;
            record off;
        }
    }
}
sudo systemctl restart nginx

vlc:rtmp://<server-ip>/live/stream
or:
ffplay rtmp://124.221.6.242:1935/live/rtmp -fflags nobuffer -analyzeduration 1000000
'''
